DynamicActivity Classe

Definizione

public ref class DynamicActivity sealed : System::Activities::Activity, System::ComponentModel::ICustomTypeDescriptor

[System.Windows.Markup.ContentProperty("Implementation")]
public sealed class DynamicActivity : System.Activities.Activity, System.ComponentModel.ICustomTypeDescriptor

[<System.Windows.Markup.ContentProperty("Implementation")>]
type DynamicActivity = class
    inherit Activity
    interface ICustomTypeDescriptor

Public NotInheritable Class DynamicActivity
Inherits Activity
Implements ICustomTypeDescriptor

Ereditarietà

Object

Activity

DynamicActivity

Attributi

ContentPropertyAttribute

Implementazioni

ICustomTypeDescriptor

Esempio

Nell'esempio riportato di seguito viene illustrato come creare un oggetto DynamicActivity.

// Variables
var iterationVariable = new DelegateInArgument<int>() { Name = "iterationVariable" };
var accumulator = new Variable<int>() { Default = 0, Name = "accumulator" };

// Define the Input and Output arguments that the DynamicActivity binds to
var numbers = new InArgument<List<int>>();
var average = new OutArgument<double>();

var result = new Variable<double>() { Name = "result" };

return new DynamicActivity()
{
    DisplayName = "Find average",
    Properties =
    {
        // Input argument
        new DynamicActivityProperty
        {
            Name = "Numbers",
            Type = typeof(InArgument<List<int>>),
            Value = numbers
        },
        // Output argument
        new DynamicActivityProperty
        {
            Name = "Average",
            Type = typeof(OutArgument<double>),
            Value = average
        }
    },
    Implementation = () =>
        new Sequence
        {
            Variables = { result, accumulator },
            Activities =
            {
                new ForEach<int>
                {
                    Values =  new ArgumentValue<IEnumerable<int>> { ArgumentName = "Numbers" },
                    Body = new ActivityAction<int>
                    {
                        Argument = iterationVariable,
                        Handler = new Assign<int>
                        {
                            To = accumulator,
                            Value = new InArgument<int>(env => iterationVariable.Get(env) +  accumulator.Get(env))
                        }
                    }
                },

                // Calculate the average and assign to the output argument.
                new Assign<double>
                {
                    To = new ArgumentReference<double> { ArgumentName = "Average" },
                    Value = new InArgument<double>(env => accumulator.Get(env) / numbers.Get(env).Count<int>())
                },
            }
        }

Costruttori

Proprietà

Metodi

Implementazioni dell'interfaccia esplicita

Si applica a